Petranek Reservoir
Key Takeaway
Petranek Reservoir is classified as low hazard in Montana. It was completed in 1937 and is 89 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 34 ft (taller than 92% in MT) |
| Dam Length | 584 ft |
| Dam Type | Earth |
| Max Storage | 125 acre-ft |
| Normal Storage | 120 acre-ft |
| Year Completed | 1937 (89 years old) |
| NID ID | MT01032 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DAVID H. & BARBARA PETRENEK
Private
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Significant Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Petranek Reservoir?
Petranek Reservoir is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Petranek Reservoir?
Petranek Reservoir is owned by DAVID H. & BARBARA PETRENEK (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Petranek Reservoir built?
Petranek Reservoir was completed in 1937, making it 89 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Petranek Reservoir?
Petranek Reservoir serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Petranek Reservoir?
Petranek Reservoir has a dam height of 34 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.